<html>
<head>
    <title>Web交互性</title>
    <meta charset="UTF-8">
</head>
<body>
<form action="input_do.jsp" method="post">
    请输入信息：<input type="text" name="msg" value="www.yootk.com"><br>
    <input type="submit" value="发送">
</form>
</body>
</html>
